What happens if my agent defaults on a loan?

The collateral deposited when borrowing is liquidated to cover the outstanding amount. The agent's reputation score drops significantly, meaning higher rates and lower limits on future loans. A single default doesn't ban an agent, but the penalty is steep enough to make repayment the rational choice.

Is there a testnet? How do I get test USDC?

Yes. Specular is deployed on Arc Testnet with a MockUSDC faucet. The Get Started guide walks through testnet setup. Switching to Base Mainnet is a one-line config change.

How much does it cost in gas?

On Base, typical transactions cost $0.01–$0.05. A full borrow-and-repay cycle costs under $0.15 in gas total. The SDK handles gas estimation automatically.

What frameworks are supported?

The JavaScript SDK works with LangChain, CrewAI, AutoGPT, Eliza, and any framework that can control an Ethereum wallet. There's also a REST API for Python agents or non-JS environments.

How long does a basic integration take?

About ten minutes for a working prototype. Install the SDK, initialize with your wallet, call register(), then borrow(). Most developers go from zero to a working testnet loan in a single sitting.

Specular | Where Capital Meets Autonomy

Built on

People, businesses, and machines all need the ability to borrow and lend.

Millions

of businesses

Billions

of people

Trillions

of agents (soon)

01Protocol

Register. Build reputation. Access capital. Three primitives, on any EVM chain.

How it works

01Register onchainCall AgentRegistry from any EVM wallet.

02Borrow USDCRequest capital through the marketplace.

03Build reputationRepay on time. Rates come down.

Terminal

$ specular register --name "treasury-agent"

→ Broadcasting to Base Mainnet...

→ Tx confirmed: 0x8f3a...c91d

✓ Agent registered

address0xa4F2...9c3E

nametreasury-agent

score500

statusActive

Terminal

$ specular borrow --amount 500 --collateral wstETH:2,USDC:200

→ Basket value: $4,120 (haircut-adjusted) · HF: 8.24

→ Terms: 6.9% APR · 150% collateral

✓ 500 USDC deposited to wallet

Lending Pool

500 USDC

treasury-agent

Terminal

$ specular supply --amount 1000 --pool main

→ Approving USDC transfer...

→ Deposited to LiquidityMarketplace

✓ 1,000 USDC supplied to pool

treasury-agent

1,000 USDC

Lending Pool

Terminal

$ specular repay --loan latest

✓ Loan repaid on time

→ Reputation updated: 500 → 620

→ New terms: 5.9% APR · 138% collateral

BeforeScore 500 · 6.9% APR · 150% collateral

↓

AfterScore 620 · 5.9% APR · 138% collateral

↓

Over timeScore 1000 · 2.9% APR · 100% collateral

Terminal

$ specular earnings --pool main

→ Pool utilization: 78%

→ Loans funded from your capital: 12

✓ Yield earned: 42.80 USDC (4.28% APY)

Supplied1,000 USDC

↓

Earned42.80 USDC from borrower repayments

↓

Balance1,042.80 USDC · withdraw anytime

paused · click a step or tap outside

Identity & Credit

Onchain identity with a verifiable reputation score.

address0xa4F2...9c3E

score500

loans.repaid0

loans.defaulted0

volume.total$0

collateral.posted—

healthFactor—

/ 1000

R +0 repay
V +0 volume
D −0 default
L −0 leverage

SDK

JavaScript, Python, or raw HTTP.

// npm install @specular/sdk
const { SpecularSDK } = require('@specular/sdk');
const sdk = new SpecularSDK({ wallet });

// Register agent onchain
await sdk.register({ name: 'MyAgent' });

// Borrow 50 USDC for 30 days
const loan = await sdk.borrow(50, 30);

// Repay and build reputation
await sdk.repay(loan.id);

import requests

BASE = "https://api.specular.network"
HEADERS = {"Content-Type": "application/json"}

# Register agent
requests.post(f"{BASE}/tx/register", headers=HEADERS,
             json={"name": "MyAgent"})
# Borrow 50 USDC for 30 days
loan = requests.post(f"{BASE}/tx/request-loan", headers=HEADERS,
                     json={"amount": 50, "days": 30})
# Repay
requests.post(f"{BASE}/tx/repay-loan", headers=HEADERS,
             json={"id": loan.json()["id"]})

# Register agent
curl -X POST https://api.specular.network/tx/register \
  -H "Content-Type: application/json" \
  -d '{"name": "MyAgent"}'

# Borrow 50 USDC for 30 days
curl -X POST https://api.specular.network/tx/request-loan \
  -H "Content-Type: application/json" \
  -d '{"amount": 50, "days": 30}'

# Repay loan
curl -X POST https://api.specular.network/tx/repay-loan \
  -H "Content-Type: application/json" \
  -d '{"id": "LOAN_ID"}'

02Use Cases

Credit unlocks agency. New workflows become possible when agents can borrow on their own.

Trading agents

Borrow USDC, execute a strategy, repay, and keep the spread. Collateral can be ETH, stablecoins, or tokenized treasuries. Reputation compounds with every cycle.

Trajectory

Day 1Borrows 500 USDC · 6.9% APR

Month 6Borrows 25,000 USDC · 3.5% APR

Year 1$2.4M volume · score 1000

Borrow

Infrastructure agents

Borrow to cover gas, compute, and API costs. Repay from revenue. Build credit over time and unlock cheaper capital as you grow.

Trajectory

MonthlyBorrows 2,000 USDC for ops

RevenueEarns 3,400 USDC from tasks

ResultSelf-sustaining in 60 days

Borrow & Repay

03Launch

You don't need to build an agent. We'll launch one for you.

Connect your walletMetaMask, Coinbase, or any EVM wallet

We launch your agentOnchain identity, score 500, ready in one transaction

✓

Direct it to borrow, trade, or earnYour agent operates autonomously. You stay in control.

agent.specular

statuslive

wallet0xa4F2...9c3E

score500

readyborrow · lend · earn

04Economics

Actuarially fair pricing. Rates respond to reputation, demand, and market conditions.

500

reputation score

Calm · U=50%

02505007501000

Interest Rate

6.9%

Collateral

150%

Max Borrow

$50k

Drag to explore how score affects your terms

05For capital providers

Yield from borrowers who can't miss a payment.

	DeFi today	Specular
Rates	Same for everyone	2.9% to 10.9%Based on score
Collateral	150%+ always	100–200%Improves with reputation
Identity	None	Onchain reputationCompounds every cycle
Info rent	200–600 bps	Near zero